== sanity test 413k: QoS mkdir exclude prefixes ========== 11:53:27 (1790956407)
lmv.lustre-clilmv-ffff905958161000.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff905958161000.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff905958161000.qos_exclude_prefixes=_temporary